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Zinaida [17]
3 years ago
10

Find the area of a regular octagon with

Mathematics
2 answers:
TEA [102]3 years ago
6 0
I believe the answe is A
vesna_86 [32]3 years ago
4 0

Answer:

A= 695.3cm²

Step-by-step explanation:

  • We khow that the area of anctagon is : A= 2(1+\sqrt{2})*a² with a the side
  • so A= 2(1+√2)*a² = 695.29= 695.3 cm²

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WHat is the missing height?
ololo11 [35]

Answer:

w = 4 cm

Step-by-step explanation:

recall that the area of a triangle is given by

A = (1/2) x base length x height

we are given:

A = 10 cm²

base length = 5 cm

height = w

substituting the values above into the equation,

A = (1/2) x base length x height

10 = (1/2) x 5 x w

20 = 5w

w = 20/5

w = 4 cm

3 0
3 years ago
Read 2 more answers
The radius of a circle is 6 meters. What is the area of a sector bounded by a 150 arc
just olya [345]

Answer:

47.14 m²

Step-by-step explanation:

Recall that the central angle of a full circle is 2π radians or 360°.  The area of the sector bounded by a 150° arc is the fraction

150°

------- times the area of the full circle (πr²):

360°

(15/36)π(6m)² = 0.417(3.14)(36 m² = 47.14 m²

3 0
3 years ago
Help please (-5)-20-(-49)
Tom [10]
It's just -5-20-49 so the answer would be -74
8 0
3 years ago
Your science teacher has a 1:200 scale model of the space shuttle Atlantis. Which of the proportions can you use to find the act
Daniel [21]

Answer: B. (1/200 = x/19.5)

 

EXPLANATION

 

Space shuttle Atlantis model scale 1:200

Length of Atlantis on model = 19.5

The actual length of Atlantis = x

Find x

 

Scale = 1:200; in decimal = 1/200

When length on model = 1

Actual length = 200

 

When actual length = x

Length on model = 19.5

Scale = x:19.5 ; in decimal = x/19.5

 

Equating both scales,

1/200 = x/19.5 (Option B)

5 0
4 years ago
The difference of two numbers is 3. Their sum is 13. Find the numbers
tekilochka [14]
Subtract 3 from 13 you get 10, divide that by two, you get 5, so one number is 5 and then add the three to the other 5, you get 8 
The numbers are 5 & 8
6 0
3 years ago
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